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Digital images of the slide, with cross-section of the cholesteatoma, stained with Hematoxylin-Eosin. We can see three forming parts: A - A perimatrix - subepithelial connective tissue, containing collagen, elastic fibers, fibroblasts and inflammatory cells. B - A matrix - epithelium similar to normal skin epidermis. C - Cystic content - formed by keratin.
